Completing Installation; Installation In Existing Construction - NuTone 8663RP Instruction Manual

POWER/BLOWER UNIT INSTALLATION
1. R efer to Figure 1. Place power/blower unit into housing so that mounting
plate's tabs insert into slots in housing.
2. P ress other end of mounting plate down until it is firmly seated over scroll
and plug-in receptacles.
3. S ecure mounting plate to housing with provided screw.
4. I nsert motor plug into junction box receptacle.

COMPLETING INSTALLATION

1. I nsert lamp plug into junction box receptacle and secure reflector assembly to
motor frame with wing nut provided.
2. I nstall lamps 100 watt (maximum) for light, and 7 watt (maximum) for
night light (Night light not provided on 8664RP).
3. S queezing the grille assembly's mounting springs together, insert springs into
slots on both sides of housing.
4. P ress grille assembly firmly into place against ceiling.

INSTALLATION IN EXISTING CONSTRUCTION

Locate fan between ceiling joists.
Plan ducting wiring before proceeding with installation. Refer to Figure 4 for
wiring. CAUTION: Check area above planned location to be sure that:
1. D ucting can be installed.
2. W iring can be run to the planned location.
3. N o wiring or other obstruction might interfere with installation.
I
NSTALLATION FROM ACCESSIBLE AREA ABOVE
1. A fter determining desired location for fan, drill a small hole in the ceiling.
Place a coat hanger or other stiff wire up through hole to help in locating from
above.
2. P lace fan housing on top of ceiling surface and use the housing as a
template to mark area to be cut out. Cut round hole 13
rough opening.
3. A fter cutting out opening, mount housing in the opening using the hanger
bars provided.
A. I nsert hanger bars in slots in housing.
B. P osition housing in opening so that bottom of housing is flush with ceiling.
C. U se screws or nails (not provided) to secure hanger bars to ceiling joists.
4. I nstall ducting and wiring as described above.
INSTALLATION FROM AREA BELOW CEILING
Note: If you do not have access to the area above the installation location, make
sure that the installation will not interfere with existing wiring, plumbing, etc. and
that the wiring and ducting can be run to the desired location. It will be neces-
sary to use flexible duct when installing the unit from below.
1. T he fan must be mounted between ceiling joists. Decide where you want to
locate the fan, and then determine where the nearest joists are.
Locating Joists – Lightly tap the ceiling. A hollow sound means no joist; a
solid sound means a joist is present. To be sure you have located a joist, drill
a small hole (1/16") and probe into the ceiling with a wire.
2. L ocate the joists. Drill a starter hole in the ceiling between the joists.
3. T o exactly locate the edge of joist, saw a line from hole to joist.
4. R efer to page 1. Remove power/blower unit from housing.
5. U se the housing pan as a template to mark cutout: place pan centered
between joist and trace around pan.
6. M ake cutout along outside of marked line.
7. R efer to Figure 5. Install 2 x 4 cleats to both ceiling joists. In some cases it
may be necessary to use more than a single cleat on one side. The distance
between cleats must be at least 9
8. R emove side wiring knockout and insert and secure an approved box con-
nector into the wiring entrance hole.
9. U se pliers to bend both mounting tabs as flush as possible to the side of the
housing.
10. I nstall duct collar.
11. S tring wiring through box connector and connect 4" flexible duct to duct col-
lar.
12. C arefully push ductwork and wiring back into cutout. Place housing into
cutout.
13. U se wood screws to secure housing to cleats through four holes in hous-
ing's pan. Make sure pan is flush to finished ceiling.
14. I nstall Power/Blower Unit and complete installation.
⁄ " in diameter for
1
8
⁄ " but not more than 10".
1
8
11-1/2"
9-1/8"-10"
Joist
4" Flexible
Duct
Mounting
Holes
CLEANING AND RELAMPING
1. P ull grille assembly away from ceiling.
2. S queezing the grille assembly's mounting springs together, remove grille
assembly from housing to expose socket for relamping.
3. C lean grille and lens assembly using a mild soap and water solution.
Assemblies with wood frames should not be immersed.
4. R eplace grille assembly flat against ceiling after cleaning or relamping.
5-3/4"
2"
4"
Cleat
FIGURE 5
120vAC
House Wiring
Duct
Collar
Wiring
Knockout
Bend
Mounting
Tabs
Flush To
Side of
Housing
FIGURE 6